﻿Oligochceia 
  of 
  Travancore. 
  501 
  

  

  On 
  the 
  clitellum 
  the 
  setae 
  are 
  wanting. 
  Male 
  pores 
  on 
  

   the 
  xviii. 
  segment 
  corresponding 
  to 
  the 
  lines 
  of 
  setae 
  h 
  ; 
  

   between 
  the 
  male 
  pores 
  the 
  setae 
  are 
  wanting. 
  Each 
  male 
  

   pore 
  is 
  placed 
  on 
  a 
  whitish 
  tubercle, 
  which 
  is 
  supported 
  by 
  a 
  

   swollen 
  papilla 
  (PI. 
  XIII. 
  fig. 
  8). 
  

  

  There 
  are 
  other 
  paired 
  papillae 
  on 
  intersegmental 
  furrows 
  

   xvi.-xvii., 
  xix.-xx., 
  xx.-xxi., 
  and 
  xxi.-xxii., 
  crowded 
  in 
  the 
  

   middle 
  ventral 
  line. 
  The 
  last 
  or 
  the 
  last 
  two 
  pairs 
  of 
  

   papillae 
  may 
  be 
  wanting 
  ; 
  the 
  pair 
  of 
  intersegmental 
  

   furrows 
  xvi.-xvii. 
  is 
  more 
  developed 
  and 
  swollen 
  than 
  other 
  

   pairs 
  (PL 
  XIII. 
  fig. 
  8). 
  Female 
  pores 
  in 
  the 
  anterior 
  part 
  

   of 
  the 
  xiv. 
  segment, 
  about 
  in 
  the 
  lines 
  of 
  the 
  setae 
  a, 
  in 
  a 
  

   transversely 
  extended 
  little 
  area, 
  placed 
  towards 
  the 
  circle 
  of 
  

   the 
  setae. 
  

  

  Spermathecal 
  pores 
  two 
  pairs, 
  hidden 
  in 
  intersegmental 
  

   furrows 
  vii.-viii. 
  and 
  viii.-ix. 
  in 
  the 
  lines 
  of 
  the 
  setae/. 
  

  

  Internal 
  anatomy. 
  — 
  Septa 
  vii.-viii. 
  — 
  xii.-xiii. 
  much 
  

   thickened. 
  

  

  A 
  strong 
  gizzard 
  in 
  the 
  vi. 
  segment. 
  The 
  sacculated 
  

   intestine 
  begins 
  in 
  the 
  xiv. 
  segment. 
  Last 
  hearts 
  in 
  the 
  xiii. 
  

   segment. 
  

  

  Micronephridia 
  very 
  small. 
  

  

  Two 
  pairs 
  of 
  testes 
  and 
  sperm-duct-funnels 
  lie 
  ventrally 
  

   in 
  the 
  x. 
  and 
  xi. 
  segments. 
  The 
  testes 
  and 
  funnels 
  of 
  a 
  single 
  

   segment 
  are 
  included 
  in 
  a 
  pair 
  of 
  large 
  and 
  a 
  few 
  lobated 
  cap- 
  

   sules, 
  which 
  join 
  dorsally 
  to 
  the 
  oesophagus. 
  These 
  capsules 
  

   are 
  compressed 
  between 
  the 
  strong 
  funnel-like 
  septa 
  ix.-x., 
  

   x.-xi., 
  and 
  xi.-xii., 
  to 
  which 
  they 
  are 
  united 
  only 
  in 
  the 
  

   ventral 
  region 
  of 
  the 
  body 
  ; 
  in 
  other 
  regions 
  they 
  are 
  free. 
  

   It 
  is 
  to 
  be 
  noted 
  that 
  the 
  capsules 
  round 
  the 
  oesophagus 
  are 
  

   traversed 
  by 
  little 
  muscular 
  bundles, 
  which 
  go 
  from 
  one 
  septum 
  

   to 
  another, 
  and 
  sometimes 
  are 
  prolonged 
  to 
  the 
  body-wall. 
  

  

  A 
  pair 
  of 
  white, 
  finger-shaped 
  sperm-sacs 
  depends 
  from 
  

   septum 
  ix.-x. 
  into 
  the 
  ix. 
  segment 
  ; 
  a 
  second 
  pair 
  of 
  similar 
  

   sacs 
  depends 
  from 
  septum 
  xi.-xii. 
  into 
  the 
  xii. 
  segment. 
  

   The 
  sperm-sacs 
  are 
  somewhat 
  smaller 
  than 
  the 
  testicular 
  

   capsules. 
  

  

  The 
  prostates 
  consist 
  of 
  a 
  strong, 
  cylindrical, 
  muscular 
  

   duct 
  ; 
  that 
  from 
  the 
  male 
  pore 
  goes 
  laterally, 
  and 
  then 
  back- 
  

   wards 
  into 
  the 
  xix. 
  segment, 
  to 
  unite 
  with 
  the 
  glandular 
  

   portion. 
  This 
  portion 
  is 
  well 
  developed 
  and 
  provided 
  with 
  

   grooves 
  which 
  form 
  lobes 
  at 
  the 
  margins. 
  The 
  glandular 
  

   portion 
  extends 
  from 
  the 
  xix. 
  to 
  the 
  xxii. 
  segment 
  inclusive 
  

   (PI. 
  XIII. 
  fig. 
  9). 
  

  

  There 
  are 
  two 
  pairs 
  of 
  spermathecae 
  in 
  the 
  viii. 
  and 
  ix, 
  

   segments. 
  The 
  main 
  pouch 
  consists 
  of 
  a 
  sac-shaped 
  trans- 
  

  

  